<template>
  <div>
    <el-container class="home-container">
    <el-header>
      <div>
        <img class="header_img" src="../assets/touxiang.jpg">
        <span>电商后台管理系统</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
    </el-header>
    <el-container>
    <el-aside :width="isCollapse ? '64px':'200px'">
      <div class="toggle-button" @click="toggleCollapse">|||</div>
    <el-menu
      background-color="#333744"
      text-color="#fff"
      active-text-color="#409EFF"
      unique-opened
      :collapse="isCollapse"
      :collapse-transition="false"
      router
      :default-active="activePath"
     >
      <!-- 一级菜单 -->
      <el-submenu :index="item.id+''"  v-for="item in menulist" :key="item.id">
        <!-- 一级菜单的模板区 -->
        <template slot="title">
          <i :class="iconsObj[item.id]"></i>
          <span>{{item.authName}}</span>
        </template>
        <!-- 二级菜单 -->
        <!-- 添加router菜单栏导航 后台有path 在index中使用 -->
      <el-menu-item :index="'/'+subItem.path" v-for="subItem in item.children" :key="subItem.id" @click="saveNavState('/'+subItem.path)">
        <template slot="title">
          <i class="el-icon-menu"></i>
          <span>{{subItem.authName}}</span>
        </template>
      </el-menu-item>
      </el-submenu>
    </el-menu>
    </el-aside>
    <el-main>
      <router-view/>
    </el-main>
    </el-container>
    </el-container>
  </div>
  

</template>
<script>
export default {
  data(){
    return{
      //左侧菜单数据
      menulist:[],
      iconsObj:{
        "125":"iconfont icon-user",
        "103":"iconfont icon-icon-mima",
        "101":"iconfont icon-shangpin",
        "102":"iconfont icon-icon-gongju",
        "145":"iconfont icon-baobiao",
      },
      isCollapse:false,
      //被二级菜单激活的链接地址
      activePath:""
    }
  },
  created(){
    this.getMenuList()
    this.activePath=window.sessionStorage.getItem("activePath")
  },
  methods: {
    logout() {
      //退出销毁token 后跳转到登录页
      window.sessionStorage.clear();
      this.$router.push("/login");
    },
    //获取所有的菜单
    async getMenuList(){
      const {data:res}=await this.$http.get("menus")
      // console.log(res)
      if(res.meta.status!==200) return this.$message.error(res.meta.msg)
      this.menulist=res.data
    },
    //.then和async解构Promise一样
    // getMenuList(){
    //   this.$http.get("menus").then(res=>{
    //     console.log(res)
    //     this.menulist=res.data.data
    //   })
    // }
    //点击按钮切换菜单的折叠和展开
    toggleCollapse(){
      this.isCollapse=!this.isCollapse
    },
    saveNavState(activePath){
       window.sessionStorage.setItem("activePath",activePath)
       this.activePath=activePath
    }
  },
};
</script>
<style lang="scss" scoped>
.home-container{
  height: 100vh;
}
.el-header{
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  padding-left: 10px;
  align-items: center;
  color: #fff;
  font-size: 20px;
  >div{
    display: flex; 
    align-items: center;
    span{
      margin-left: 10px;
    }
  }
  .header_img{
    width: 55px;
    height: 55px;
    border-radius: 50%;
    // padding-top: 3px;
 }
}

.el-aside{
  background-color: #333744;
  .toggle-button{
      background-color: #4A5064;
      text-align: center;
      font-size: 10px;
      line-height: 24px;
      color: #fff;
      letter-spacing: 0.2em;
      cursor: pointer;
  }

  .el-menu{
    border-right: 0;
  }
}
.el-main{
  background-color: #eaeadf;
}
.iconfont{
  margin-right: 10px;
}
</style>